This update is primarily for bug fixes and optimization tweaks, but contains a few new things.
Clang Support
NESFab seemingly compiles under the clang++ compiler now, meaning it might be possible to compile natively on Mac.
Flash Saves
I've improved support for saving to flash memory, adding a +sector modifier to align data to sectors, and a --sector-size compiler option.
See examples/flash_save to see an example.